Telegraph switching system



l March 27, 1951 w. B. BLANTON ET AL 2,546,527

TELEGRAPH SWITCHING SYSTEM Filed July 8, 1948 21 Sheets-Sheet l I 1! l i l l l l l l l l l l l l l l l l l l l l l f INVENTORS W. B. BLANTGN E L. CURRE G.W. JANSON ATTORNEY lBY im mm2] f W. B. BLANTON ET AL TELEGRAPH SWITCHING SYSTEM March 27, 1951 21 Sheets-Sheet 2 Filed July 8, 1948 'T0 FIG. 3

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m m mom mom INVENTols w. a. BLANTON F. 1 .CURR1E G. w. JANsoN ATTORN EY March 27, 1951 w. B. BLANTON ET AL TELEGRAPH SWITCHING SYSTEM Filed July 8, 1948 21 Sheets-Sheet 4 INVENTORS W. B.BLANTON 'E I .CURRIE III. m .O m OP Ex mnh G. W. JANSON ATTORNEY March 27, 1951 w. B. BLANTON ET A1. 2,546,627

TELEGRAPH SWITCHING SYSTEM Filed July 8, 1948 2l Sheets-Sheet 6 INVENTORS BY W. B. BLANTON F. [..CURFHE G.W. JANSON 'ATTORNEY March 27, 1951 w. B. BLANTON ET Al.

TELEGRAPH SWITCHING SYSTEM 21 Sheets-Sheet '7 Filed July 8, 1948 zoFumw Qzoumm ATTORNEY 21 Sheets-Sheet 8 INVENTORS W. B. BLANTON F I .CURRIE W. JANSON ATTORNEY w. B. BLANTON ET AL TELEGRAPH swITcHING SYSTEM March 27, 1951 .Filed Jly 8, 1948 ZOTPOmm. @K IP v BY I O O C0 W. B. BLANTON ET AL TELEGRAPH SWITCHING SYSTEM March 27, 1951 21 Sheets-Sheet 9 Filed July 8, 1948 TO FIG. 5

March 27, 1951 w. B. BLANTON ET AL 2,546,627

TELEGRAPH swITcHING SYSTEM Filed July 8, 1948 21 Sheets-Sheet l0 ci IT.

TO DI RECTELY CONNECTED SENDING CIRCUITS IN V EN TORS ".To F|G 9 W. B. BLANTON O E I .CURRIE BY G.w. JANsoN LL ATTORNEY March 27, 1951 W B BLANTON ET AL 2,546,627

TELEGRAPH SWITCHING SYSTEM Filed July 8, 1948 21 Sheets-Sheet l1 'To FIG. l2

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March 27, 1951 w. B. BLANTON ET Al. 2,546,627

TELEGRAPH SWITCHING SYSTEM Filed July 8, 1948 y 2l Sheets-Sheet 13 In I5 .2 JNVENToRs (o w. B. BLANTON F. L cURRlE m S2 'BY G. w. JANsoN ATTORNEY March 27, 1951 w. B. BLANTO'N ET AL.

TELEGRAPH swITcHING SYSTEM 21 Sheets-Sheet l5 Filed July 8, 1948 INVENToRs w, a. BLANTON F. n .cURRlE BY G.w. JANsoN ATTORNEY March 27, 1951 w. B. BLANTON ET Al. 2,546,627

TELEGRAPH swITcHING SYSTEM Filed July s, 1948 I 21 sheets-sheet 1e INVENTORS .W. B. BLANTON F. I .CURRIE G, W. JANSON ATTORNEY FIG. I6

March 27, 1951 w. B. BLANTON ET Al. 2,546,627

TELEGRAPH SWITCHING SYSTEM Filed July 8, 1948 2]. Sheets-Sheet 17 TO FIG. l5

`1NVENToRs w. B. BLANTON F. L .cURmE BY G. w. JANsoN ATTORNEY FIG. 17

March 27, 1951 W. B. BLANTON ET A1. 2,545,627

' TELEGRAPH SWITCHING SYSTEM Filed July 8, 1948 2l Sheets-Sheet 18 -To FIG. I9

ATTORNEY March 27, 1951 w. B. BLANTON ET A1.

TELEGRAPH SWITCHING SYSTEM 2l Sheets-Sheet 19 Filed July 8, 1948 

